Hollywood baby boom | Mark-Paul Gosselaar and Catriona McGinn

Hollywood baby boom | Mark-Paul Gosselaar and Catriona McGinn

Jason Merritt / Getty Images for Nintendo

Mark-Paul Gosselaar and his wife, Catriona McGinn, are now second-time parents. This is the former "Saved by the Bell" star's fourth child and the second for the advertising exec, whom he married in July 2012.

Mark-Paul Gosselaar and his wife, Catriona McGinn, are now second-time parents. This is the former "Saved by the Bell" star's fourth child and the second for the advertising exec, whom he married in July 2012. (Jason Merritt / Getty Images for Nintendo)

Mark-Paul Gosselaar and his wife, Catriona McGinn, are now second-time parents. This is the former "Saved by the Bell" star's fourth child and the second for the advertising exec, whom he married in July 2012.